package com.dzu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.dzu.common.constant.ProductConstant;
import com.dzu.common.to.SkuHasStockVo;
import com.dzu.common.to.SkuReductionTo;
import com.dzu.common.to.SpuBoundTo;
import com.dzu.common.to.es.SkuEsModel;
import com.dzu.common.utils.PageUtils;
import com.dzu.common.utils.Query;
import com.dzu.common.utils.R;
import com.dzu.gulimall.product.dao.SpuInfoDao;
import com.dzu.gulimall.product.entity.*;
import com.dzu.gulimall.product.feign.CouponFeignService;
import com.dzu.gulimall.product.feign.SearchFeignService;
import com.dzu.gulimall.product.feign.WareFeignService;
import com.dzu.gulimall.product.service.*;
import com.dzu.gulimall.product.vo.*;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.util.Date;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService spuImagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService productAttrValueService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     *
     * TODO 高级部分完善
     * @param vo
     */
//    @GlobalTransactional // seata AT 分布式事务
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        // 1、保存spu基本信息 pms_spu_info
        SpuInfoEntity spuInfoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo,spuInfoEntity);
        spuInfoEntity.setCreateTime(new Date());
        spuInfoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(spuInfoEntity);


        // 2、保存spu的描述图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity spuInfoDescEntity = new SpuInfoDescEntity();
        spuInfoDescEntity.setSpuId(spuInfoEntity.getId());
        spuInfoDescEntity.setDecript(String.join(",",decript));
        spuInfoDescService.saveSpuInfoDesc(spuInfoDescEntity);


        // 3、保存spu的图片集 pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(spuInfoEntity.getId(), images);

        // 4、保存spu的规格参数 pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity productAttrValueEntity = new ProductAttrValueEntity();
            productAttrValueEntity.setAttrId(attr.getAttrId());

            AttrEntity byId = attrService.getById(attr.getAttrId());
            productAttrValueEntity.setAttrName(byId.getAttrName());

            productAttrValueEntity.setAttrValue(attr.getAttrValues());
            productAttrValueEntity.setQuickShow(attr.getShowDesc());

            productAttrValueEntity.setSpuId(spuInfoEntity.getId());
            return productAttrValueEntity;
        }).collect(Collectors.toList());
        productAttrValueService.saveProductAttr(collect);


        // 4.5保存spu的积分信息：gulimall_sms ==> sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds,spuBoundTo);
        spuBoundTo.setSpuId(spuInfoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode() != 0) {
            log.error("远程保存spu积分信息失败");
        }


        // 5、保存当前spu的所有sku信息
        List<Skus> skus = vo.getSkus();
        if (skus.size() > 0) {
            skus.forEach(item -> {

                String defaultImg = "";

                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImg = image.getImgUrl();
                    }
                }
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item,skuInfoEntity);
                skuInfoEntity.setBrandId(spuInfoEntity.getBrandId());
                skuInfoEntity.setCatalogId(spuInfoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(spuInfoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);

                // 5.1) sku的基本信息： pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();

                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {

                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());

                    return skuImagesEntity;
                }).filter(entity ->
                        // 返回True就是需要 false就是剔除
                    StringUtils.isNotEmpty(entity.getImgUrl())
                ).collect(Collectors.toList());


                // 5.2) sku的图片信息： pms_sku_images
                skuImagesService.saveBatch(imagesEntities);
                // TODO 没有图片： 路径则无需保存

                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);
                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());


                // 5.3) sku的销售属性信息： pms_sku_sale_attr_value
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                // 5.4) sku的优惠、满减等信息 gulimall_sms ==> sms_sku_ladder\sms_sku_full_reduction\sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item,skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal(0)) > 0) {
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r1.getCode() != 0) {
                        log.error("远程保存sku优惠信息失败");
                    }
                }


            });
        }

    }





    @Override
    public void saveBaseSpuInfo(SpuInfoEntity spuInfoEntity) {
        this.baseMapper.insert(spuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {

        QueryWrapper<SpuInfoEntity> queryWrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if (StringUtils.isNotEmpty(key)) {
            queryWrapper.and(w -> w.eq("id",key).or().like("spu_name",key));
        }

        String status = (String) params.get("status");
        if (StringUtils.isNotEmpty(status)) {
            queryWrapper.eq("publish_status",status);
        }

        String brandId = (String) params.get("brandId");
        if (StringUtils.isNotEmpty(brandId)) {
            queryWrapper.eq("brand_id",brandId);
        }

        String catalogId = (String) params.get("catalogId");
        if (StringUtils.isNotEmpty(catalogId)) {
            queryWrapper.eq("catalog_id",catalogId);
        }

        /**
         *    page: 1,//当前页码
         *    limit: 10,//每页记录数
         *    sidx: 'id',//排序字段
         *    order: 'asc/desc',//排序方式
         *    key: '华为',//检索关键字
         *    catalogId: 6,//三级分类id
         *    brandId: 1,//品牌id
         *    status: 0,//商品状态
         */
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                queryWrapper
        );

        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {

        // 1、查出当前spuId对应的所有sku信息，品牌的名字。
        List<SkuInfoEntity> skus =  skuInfoService.getSkusBySpuId(spuId);

        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        // TODO 4、查询当前sku的所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> baseAttr = productAttrValueService.baseAttrlistforspu(spuId);

        List<Long> attrIds = baseAttr.stream().map(ProductAttrValueEntity::getAttrId).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);

        HashSet<Long> idSet = new HashSet<>(searchAttrIds);

        List<SkuEsModel.Attrs> attrsList = baseAttr.stream().filter(item -> idSet.contains(item.getAttrId()))
                .map(item -> {
                    SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
                    BeanUtils.copyProperties(item, attrs1);
                    return attrs1;
                })
                .collect(Collectors.toList());

        // TODO 1、发送远程调用、库存系统查询是否有库存
        Map<Long, Boolean> stockMap = null;
        try {
             R r = wareFeignService.getSkuHasStock(skuIdList);


            //  内部类
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {

            };


            stockMap = r.getData("data",typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, SkuHasStockVo::getHasStock));

        }catch (Exception e){
            log.error("库存服务查询异常：原因{}",e);
        }

        // 2、封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> collect = skus.stream().map(sku -> {
            // 组装需要的数据
            SkuEsModel skuEsModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, skuEsModel);
            //skuPrice\skuImg\
            skuEsModel.setSkuPrice(sku.getPrice());
            skuEsModel.setSkuImg(sku.getSkuDefaultImg());
            // hasStock\hotScore\
            // 设置库存信息
            if (finalStockMap == null) {
                skuEsModel.setHasStock(true);
            }
            skuEsModel.setHasStock(finalStockMap.get(sku.getSkuId()));


            // TODO 2、热度评分。0
            skuEsModel.setHotScore(0L);
            // TODO 3、查询品牌和分类的信息
            BrandEntity brandEntity = brandService.getById(skuEsModel.getBrandId());
            // brandName\brandImg
            skuEsModel.setBrandName(brandEntity.getName());
            skuEsModel.setBrandImg(brandEntity.getLogo());

            // catalogName
            CategoryEntity categoryEntity = categoryService.getById(sku.getCatalogId());
            skuEsModel.setCatalogName(categoryEntity.getName());

            // Attrs {attrId,attrName,attrValue}
            // 设置检索属性
            skuEsModel.setAttrs(attrsList);

            return skuEsModel;
        }).collect(Collectors.toList());

        // TODO 5、将数据发送给es进行保存： gulimall-search

        R r = searchFeignService.productStatusUp(collect);
        if (r.getCode() == 0) {
            // 远程调用成功
            // TODO6 修改当前spu状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP);
        }else {
            // 远程调用失败
            // TODO 7重复调用？？接口幂等性：重试机制？？
            // 1、构造请求数据，将对象转为json
            //     RequestTemplate template = buildTemplateFromArgs.create(argv);
            // 2、发送请求进行执行 执行成功会解码响应数据
            //    executeAndDecode(template)
            // 3、执行请求会有重试机制
            //  while(true){
            //  executeAndDecode(template)
            //  }catch(){
            //  try{
            //  retryer.continueOrPropagate(e)
            // catch
            //  }
            // continue
            //  }

        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity skuInfo = skuInfoService.getById(skuId);
        Long spuId = skuInfo.getSpuId();
        SpuInfoEntity spuInfo = getById(spuId);
        return spuInfo;
    }

}
